CN207782654U - A kind of driving circuit device of two-stage clamper - Google Patents
A kind of driving circuit device of two-stage clamper Download PDFInfo
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- CN207782654U CN207782654U CN201721783995.9U CN201721783995U CN207782654U CN 207782654 U CN207782654 U CN 207782654U CN 201721783995 U CN201721783995 U CN 201721783995U CN 207782654 U CN207782654 U CN 207782654U
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- circuit
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- optical fiber
- power
- bridge arm
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Abstract
Include optical fiber connector, power input connectors, power-switching circuit, interlock circuit, indicating fault and feedback circuit, driving chip, upper bridge arm circuit and lower bridge arm circuit the utility model discloses a kind of driving circuit device of two-stage clamper；Upper bridge arm circuit is identical with lower bridge arm circuit and is connected to driving chip；Power input connectors are connect with control circuit；Optical fiber connector is connect with control circuit；Driving chip is connect with indicating fault with feedback circuit, and indicating fault is connected to the optical fiber output of optical fiber connector with feedback circuit；Interlock circuit is separately connected driving chip and indicating fault and feedback circuit；The optical fiber input of optical fiber connector is connected to interlock circuit.The utility model solves the problems, such as that driving circuit can only carry out single-stage clamper to IGBT collectors; the utility model effectively can carry out clamper to the overvoltage in IGBT turn off process; can also to busbar overvoltage of the IGBT in off state carry out clamper, be effectively protected IGBT because overvoltage and caused by fail.
Description
Technical field
The utility model belongs to IGBT technical fields, is related to a kind of driving circuit, especially a kind of driving of two-stage clamper
Circuit device.
Background technology
IGBT has the characteristics that high switching frequency, conducting small power consumption and gate pole are easy to control, in high-power transformation system
It is used widely.In IGBT applications, in addition to the technical merit of itself, another important factor is setting for its driver
Meter whether rationally with reliably.Drive control can be preferably carried out in such a way that driving and configuration are detached, it is also more advantageous
The realization of the function of two IGBT of a bridge arm is driven in one piece of driving plate.In the prior art, IGBT driving devices only support list
Grade active clamp, IGBT driving device driving power conversion circuit input ranges are small, IGBT drive input signal interference free performances
Difference.
In conclusion the prior art has the disadvantage that：
1) prior art driving circuit can only carry out clamper to the collector overvoltage occurred in IGBT turn off process.
2) prior art driving power conversion circuit input range is small, voltage regulation performance is poor, reliability is low.
3) prior art driving circuit input signal transmission signal interference is big, signal integrity is poor.
Utility model content
The shortcomings that the purpose of the utility model is to overcome the above-mentioned prior arts provides a kind of driving circuit of two-stage clamper
Device.
The purpose of this utility model is achieved through the following technical solutions：
The driving circuit device of this two-stage clamper include optical fiber connector, power input connectors, power-switching circuit,
Interlock circuit, indicating fault and feedback circuit, driving chip, upper bridge arm circuit and lower bridge arm circuit；The upper bridge arm circuit and
Lower bridge arm circuit structure is identical and is respectively connected to driving chip；The power input connectors are connect with external control circuit；
The optical fiber connector is connect with external control circuit；The driving chip is connect with indicating fault with feedback circuit, and failure refers to
Show the optical fiber output that optical fiber connector is connected to feedback circuit；The interlock circuit is separately connected driving chip and indicating fault
With feedback circuit；The optical fiber input of the optical fiber connector is connected to interlock circuit.
Further, above-mentioned power input connectors are connected with power supply；Power input connectors are connected to power supply conversion
Circuit.
Further, above-mentioned power input connectors are WAGO connecting terminals；The power-switching circuit uses tri- ends LM317
Regulator design power supply stabilization circuit.
Further, the DC-DC power module that above-mentioned power supply uses the input range with overcurrent protection wide, input 9~
36V exports as 15V ± 2%, and ripple factor is less than 5%.
Further, above-mentioned optical fiber connector is AVAGO optical transceivers, including input optical fibre and output optical fibre.
Further, the fault-signal and interlock circuit that above-mentioned indicating fault generates driving chip with feedback circuit detect
After the fault-signal amplification arrived arranges, fault-signal is passed into control system by external control circuit, control system will seal
Lock drive signal.
Further, above-mentioned interlock circuit prevents down tube from simultaneously turning on, and interlock circuit detects that down tube has through connect signal,
Drive signal is cut off simultaneously with feedback circuit with fault-signal is sent to indicating fault.
Further, it is defeated that the driving pulse after above-mentioned upper bridge arm circuit and lower bridge arm circuit improve driving chip introduces driving
Go out circuit, driving output circuit is by opening shutdown resistance and being distributed in the Vce active clamp circuits configured on plate, the two poles of the earth clamper
Circuit and gate pole regulator circuit composition.
Further, above-mentioned power-switching circuit is DC-DC power module.
The utility model has the advantages that：
The utility model solves the problems, such as that driving circuit can only carry out single-stage clamper, the utility model to IGBT collectors
Can clamper effectively be carried out to the overvoltage in IGBT turn off process, it can also be excessively electric to busbares of the IGBT in off state
Pressure carry out clamper, be effectively protected IGBT because overvoltage and caused by fail.
Further, the utility model solves driving power input Single-issue, and the design is used with overcurrent protection
Input is the power module of 9-36V super wide ranges, it is ensured that the stability of output voltage.
Further, the signal transmission and feedback of the utility model driving plate and TCU are all made of optical fiber connection, are conducive to increase
Strong anti-interference ability improves the reliability of signal transmission.
Further, the utility model uses the design method of two pieces of circuit boards, and drive circuit board is connected by harness pacifies
Configuration circuit plate on IGBT, driving function and protection detection function in driving plate and configure on plate respectively, preferably real
The high and low voltage isolation of driving circuit is showed.
Description of the drawings
Fig. 1 is the driving plate and functional block diagram of the utility model；
Fig. 2 is the driving plate working diagram block of the utility model；
Fig. 3 is the configuration version working diagram block of the utility model.
Wherein：1 is driving chip；2 be interlock circuit；3 be indicating fault and feedback circuit；4 be optical fiber connector；5 are
Power-switching circuit；6 be power input connectors；7 be to open shutdown resistance；8 be Vce active clamp circuits；9 be driving plate I/
O connectors；10 be to move back saturation detection circuit；11 be configuration plate I/O connector；12 be the two poles of the earth clamp circuit；13 be gate leve voltage stabilizing
Circuit.
Specific implementation mode
The utility model is described in further detail below in conjunction with the accompanying drawings：
The utility model supports the driving of two IGBT of a upper and lower bridge arm, referring to Fig. 1-Fig. 3：The two-stage of the utility model
The driving circuit device of clamper includes optical fiber connector 4, power input connectors 6, power-switching circuit 5, interlock circuit 2, event
Barrier instruction and feedback circuit 3, driving chip 1, upper bridge arm circuit and lower bridge arm circuit；Upper bridge arm circuit and lower bridge arm circuit structure
It is identical and be respectively connected to driving chip 1；Power input connectors 6 are connect with external control circuit；Optical fiber connector 4 and outside
Control circuit connects；Driving chip 1 is connect with indicating fault with feedback circuit 3, and indicating fault is connected to optical fiber with feedback circuit 3
The optical fiber output 4.1 of connector 4；Interlock circuit 2 is separately connected driving chip 1 and indicating fault and feedback circuit 3；Optical fiber connects
The optical fiber input 4.2 of device 4 is connected to interlock circuit 2.The power-switching circuit 5 of the utility model is DC-DC power module.
Power input connectors 6 are connected with power supply；Power input connectors 6 are connected to power-switching circuit 5.Power supply
Input connector 6 is WAGO connecting terminals；The power-switching circuit 5 is using LM317 three terminal regulators design power supply voltage stabilizing electricity
Road.Power supply inputs 9~36V using the wide DC-DC power module of the input range with overcurrent protection, export for 15V ±
2%, ripple factor is less than 5%.
Optical fiber connector 4 is AVAGO optical transceivers, including input optical fibre and output optical fibre.
Indicating fault and feedback circuit 3 are by the fault-signal that driving chip 1 generates and the failure that interlock circuit 2 detects
After signal amplification arranges, fault-signal is passed into control system by external control circuit, control system believes block driving
Number.
Interlock circuit 2 prevents down tube from simultaneously turning on, and interlock circuit 2 detects that down tube has through connect signal, with i.e. by event
Barrier signal is sent to indicating fault and cuts off drive signal simultaneously with feedback circuit 3.
Driving pulse after upper bridge arm circuit and lower bridge arm circuit improve driving chip 1 introduces driving output circuit, drives
Dynamic output circuit is by opening shutdown resistance 7 and being distributed in the Vce active clamp circuits 8, the two poles of the earth clamp circuit 12 that configure on plate
It is formed with gate pole regulator circuit 13.
The utility model is further illustrated below in conjunction with drawings and examples：
The present embodiment designs IGBT drive circuit according to said program, and circuit integral structure layout is as shown in Figure 2,3：It is external
The power supply that control circuit provides accesses driving circuit device by power input connectors 6.External control signal is connect by optical fiber
The input access driving device of device 4 is received, control circuit is fed back to by fiber optic receiver 4.DC-DC power module U7 carries for driving plate
For reliable power input.
Current-limiting resistance, filter capacitor, clamp diode and fiber optic receiver form two-way fault feedback circuit, will drive core
After the fault-signal amplification that piece 1 and interlock circuit 2 generate arranges, fault-signal is passed into control system, control system will seal
Lock pulse signal.
Resistance, filter capacitor and Schmidt trigger form interlock circuit 2, can prevent through connect signal, fault-signal is sent out
It send to fault feedback circuit, while cutting off drive signal.
Output circuit forms switched resistor circuit by resistance R203, R204, R205, R206 and R201, and per road, output includes
Two open resistance in parallel and two shutdown resistance in parallel.It can be adjusted and optimize according to IGBT parameters in time.
RC charging response circuits, which collectively constitute, on collector divider resistance and driving plate on configuration plate moves back saturation detection
Circuit carries out short-circuit protection detecting that IGBT moves back the short trouble of saturation fault message is fed back to driving chip.
The two-stage clamp circuit for configuring plate D1~D11, D15, D16, R30, R31, Q composition collector, can close in IGBT
Overvoltage during disconnected and when off state carries out clamper.
Support Capacitor, the clamp diode composition gate pole protective circuit of voltage regulation on plate are configured, overvoltage occurs in gate voltage
When can effectively be adjusted.
Claims (9)
1. a kind of driving circuit device of two-stage clamper, which is characterized in that including optical fiber connector (4), power input connectors
(6), power-switching circuit (5), interlock circuit (2), indicating fault and feedback circuit (3), driving chip (1), upper bridge arm circuit
With lower bridge arm circuit；The upper bridge arm circuit is identical with lower bridge arm circuit structure and is respectively connected to driving chip (1)；The electricity
Source input connector (6) is connect with external control circuit；The optical fiber connector (4) connect with external control circuit；The drive
Dynamic chip (1) is connect with indicating fault with feedback circuit (3), and indicating fault is connected to optical fiber connector (4) with feedback circuit (3)
Optical fiber output (4.1)；The interlock circuit (2) is separately connected driving chip (1) and indicating fault and feedback circuit (3)；Institute
The optical fiber input (4.2) for stating optical fiber connector (4) is connected to interlock circuit (2).
2. the driving circuit device of two-stage clamper according to claim 1, which is characterized in that the power input connectors
(6) it is connected with power supply；Power input connectors (6) are connected to power-switching circuit (5).
3. the driving circuit device of two-stage clamper according to claim 2, which is characterized in that the power input connectors
(6) it is WAGO connecting terminals；The power-switching circuit (5) designs power supply stabilization circuit using LM317 three terminal regulators.
4. the driving circuit device of two-stage clamper according to claim 2, which is characterized in that the power supply uses band
The wide DC-DC power module of the input range of overcurrent protection, inputs 9~36V, exports as 15V ± 2%, and ripple factor is less than
5%.
5. the driving circuit device of two-stage clamper according to claim 1, which is characterized in that the optical fiber connector (4)
For AVAGO optical transceivers, including input optical fibre and output optical fibre.
6. the driving circuit device of two-stage clamper according to claim 1, which is characterized in that the indicating fault and feedback
After the fault-signal amplification that circuit (3) detects the fault-signal that driving chip (1) generates and interlock circuit (2) arranges,
Fault-signal is passed into control system by external control circuit, control system will block drive signal.
7. the driving circuit device of two-stage clamper according to claim 1, which is characterized in that the interlock circuit (2) is anti-
Only upper down tube simultaneously turns on, and interlock circuit (2) detects that down tube has through connect signal, refers to fault-signal is sent to failure
Show and feedback circuit (3) while cutting off drive signal.
8. the driving circuit device of two-stage clamper according to claim 1, which is characterized in that the upper bridge arm circuit is under
Driving pulse after bridge arm circuit improves driving chip (1) introduces driving output circuit, and driving output circuit is by opening shutdown
Resistance (7) and Vce active clamp circuits (8), the two poles of the earth clamp circuit (12) and the gate pole regulator circuit being distributed on configuration plate
(13) it forms.
9. the driving circuit device of two-stage clamper according to claim 1, which is characterized in that the power-switching circuit
(5) it is DC-DC power module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721783995.9U CN207782654U (en) | 2017-12-20 | 2017-12-20 | A kind of driving circuit device of two-stage clamper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721783995.9U CN207782654U (en) | 2017-12-20 | 2017-12-20 | A kind of driving circuit device of two-stage clamper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207782654U true CN207782654U (en) | 2018-08-28 |
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ID=63226973
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721783995.9U Active CN207782654U (en) | 2017-12-20 | 2017-12-20 | A kind of driving circuit device of two-stage clamper |
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| CN (1) | CN207782654U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947542A (en) * | 2017-12-20 | 2018-04-20 | 西安中车永电电气有限公司 | A kind of driving circuit device of two-stage clamper |
-
2017
- 2017-12-20 CN CN201721783995.9U patent/CN207782654U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947542A (en) * | 2017-12-20 | 2018-04-20 | 西安中车永电电气有限公司 | A kind of driving circuit device of two-stage clamper |
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